<template>
  <li>
    <label>
      <input
        type="checkbox"
        :checked="todo.done"
        @change="selecteone(todo.id, $event)"
      />
      <span>{{ todo.title }}</span>
    </label>
    <button class="btn btn-danger"  @click="deleteone(todo.id)">
      删除
    </button>
  </li>
</template>

<script>
export default {
  name: "Item",
  props: ["todo"],
  methods: {
    // 删除一个todo
    deleteone(id) {
      if (confirm("你确定要删除吗?")) {
        this.$bus.$emit('delete-one-todo',id)
      }
    },
    // 勾选一个todo
    selecteone(id, e) {
      // 通知App对应的todo对象
      this.$bus.$emit('select-one-todo',id,e.target.checked)
    },
  },
};
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 3px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}
li:hover .btn {
  display: inline-block;
}

.btn-show {
  display: inline-block;
}
</style>